US778891A - Magic lantern. - Google Patents

Description

. PATENTED JAN. 3, 1905.

W. RAUSOH. MAGIC LANTERN. APPLICATION FILED APR.18, 1904.

ATTORNEYS IINTTED STATES Patented January 3, 1905.

PATENT OFFICE.

IVILHELM RAUSCH, OF NEW YORK, N. Y., ASSIGNOR TO MAX MEYER AND ALFRED LANDAU, OF NEW YORK, N. Y.

MAGIC LANTERN.

SPECIFICATION forming part of Letters Patent N0. 778,891, dated January 3, 1905.

Application filed April 18, 1904:. Serial No. 203,563.

To (all whom it may concern:

Be it known that L'WILHELM RAUSOH, a subject of.the Emperor of Germany, and a resident of the borough of Manhattan,city,county, and State of New York, have invented certain new and useful Improvements in Magic Lanterns, of which the following is a specification.

My invention relates to projecting apparatus commonly known as magic lanterns, and has for its object to provide a simple apparatus of this character in which the annoyance caused by smoke and by the necessity for regulating a burner is avoided and in which the light can be readily used separately or in conjunction with the lens apparatus.

The invention will be fully described hereinafter and the features of novelty pointed out in the appended claims.

Reference is to be had to the accompanying drawings, in which Figure 1 is a sectional plan of my invention on line 1 1 of Fig. 2. Fig. 2 is a side elevation. Fig. 3 is a sectional elevation of another form of my invention, and Fig. 4; is a partial plan of the apparatus shown in Fig. 3.

. As illustrated by Figs. 1 and 2, the apparatus comprises a lamp-supporter A, preferably tapering rearwardly, as shown in Fig. 2. This lamp-support has a funnel-shaped body A, which serves as a reflector for the lamp B, screwed to its support. An electric incandescent lamp is shown in the drawings, and this lamp is supplied with current from a dry battery C, contained within a case D, the cover of which may be formed by the said lamp-support A. One of the terminals, 0, engages the end of the lamp B. The other terminal, is adapted to be engaged by an elastic switch E, having a knob E, the said switch being in contact with the casing and through its medium connected with the other end of the lamp filament. It will therefore be understood that as soon as the knob E is pressed the current will flow through the lamp to light the same. The lamp should preferably be of such a size as not to project beyond the lamp-support A. In conjunction with the lamp-support above describedI employ a projecting apparatus which consists of a tube F, having means for supportinga lantern-slide, as indicated at F, and also provided with suitable lenses F. A telescopic arrangement may be provided at F for the purpose of varying the focus. Any suitable projecting apparatus may be employed instead of the one illustrated by the drawings as long as such projecting apparatus is provided at its rear end with a connecting device possessing the characteristics hereinafter described and claimed. The said connecting device consists of a clip G of an elastic nature, said clip having two members Gr G adapted to fit on the lamp-support A. As shown in the drawings, the clip is of greater length than the diameter of the funnel-shaped reflector and of the tube F, and the members G G converge rearwardly, so as to form a dovetailed connection with the lamp-support A. This connection not only holds the projecting apparatus or lens apparatus proper in position upon the lamp-support, but allows the said apparatus to be slid sidewise, so as to perfectly center the lens apparatus with respect to the lamp and also, if desired, move the lens apparatus aside, so that the light of the lamp will be freely spread.

In the construction illustrated by Figs. 3 and l the lens apparatus is exactly the same as in Figs. 1 and 2, but the lamp-support 0 consists of a horizontal plate having at its ends standards a, which are secured to aoasing d, containing a battery 0. This battery, as shown, consists of two cells connected in series, and the terminal 0 of one cell is connected with one terminal of the lamp 5 while the free terminal 0 of the other cell is connected with a contact-piece 0 adapted to be engaged by a switch a, pivoted at c and connected with the other terminal of the lamp 6 by a wire 0. The lamp-support in this case also is provided with a funnel-shaped reflector a of sufficient size to entirely receive the lamp 6, so as to protect the same. In this construction the connection of the lens apparatus with the lamp-support is a sliding one and practically of a dovetailed character, al-

lowing the lens apparatus to be centered and i also to be moved aside, so as to expose the lamp Z).

My improved construction above described permits the lens apparatus to be readily separated from the lamp-support, so that the device may be used as a magic lantern or simply as an electric lamp, and owing to the sliding connection of the lens apparatus with the lenssupport the lamp may be exposed Without removing the lens apparatus. The absence of a burner producing combustion products insures freedom from smell and smoke and the reflector will always keep bright.

What I claim as new, and desire to secure I by Letters Patent, is

1. The combination, with a lamp-support having a reflector and a lamp at one side, of a lens apparatus arranged on the other side of said lamp-support and having a sliding clip in connection therewith so as to allow the lens apparatus to be brought in registry with the lamp or shifted aside to expose the lamp.

2. The combination, with a lamp-support having a funnel-shaped reflector projected therefrom at one side and a lamp within said reflector, of a lens apparatus arranged to slide on said lamp-support to bring said apparatus into or out of registry with the lamp and reflector.

3. The combination, with a lamp-support having a lamp and a reflector, of a lens apparatus mounted to slide on said support in a direction transverse to the optical axis of the reflector.

4. The combination, with the lamp-support, of a lens apparatus having elastic rearwardlyconverging clip members at its rear end, to connect said lens apparatus with the lampsupport.

5. The combination, with the lamp-support provided with a reflector projected therefrom at one side and a lamp located entirely within said reflector, of a lens apparatus provided at its rear portion with a clip having a sliding connection with the said lamp-support.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILHELM RAUSCH.

Witnesses:

JOHN LOTKA, EUGENE EBLE.

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